Versions (3)
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Rev: 3 • Apr 4, 2019, 12:00 PMET MALWARE AHK/BKDR_HTV.ZKGD-A Fake HTTP 500 Containing Encoded Commands Inbound
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE AHK/BKDR_HTV.ZKGD-A Fake HTTP 500 Containing Encoded Commands Inbound"; flow:established,from_server; http.header; content:"charset=UTF-8"; http.response_line; content:"HTTP|2f|1.0|20|500|20|Internal|20|Server|20|Error"; file.data; content:"500|20|Internal|20|Server|20|Error|3c 21 2d 2d|"; fast_pattern; pcre:"/^[A-F0-9]+\x2d\x2d\x3e(?:\r\n)?$/R"; reference:url,blog.trendmicro.co.jp/archives/19054; classtype:trojan-activity; sid:2027156; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_04_04, deployment Perimeter, malware_family BKDR_HTV_ZKGD_A, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_08_28;)
Apr 4, 2019, 12:00 PM
Aug 28, 2020, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-malware.rules